A complicated commute home

7 p.m. Update: VRE Manassas Line riders may experience delays of up to an hour. Virginia Railway Express officials report that Norfolk Southern, which owns the rails, has imposed flood restrictions from Alexandria to Manassas. Under the limitations, trains can travel no more than 20 mph because of concerns that heavy rainfall could cause washouts.

6:55 p.m. Update: Post Social Issues Editor Lynda Robinson reports that downed trees and utility lines have forced police to close a portion of Route 29 just south of New Hampshire Avenue. Traffic lights in the area are also out.

6:50 pm. Update: Slow traffic is being reported around the area as commuters make their way home in the second severe storm of the day. The commute is complicated by continuing power outages, which have dwindled throughout the day but rendered many traffic signals dark, with the largest concentration in Montgomery County.

6:40 p.m. Update: A water main break at Little Falls Road and North Harrison Street in Arlington will cause traffic disruptions in the area. Repairs will continue through the night, officials said.

5:59 p.m. Update: Severe thunderstorms moving through the area will further complicate the p.m. commute. The Capital Weather Gang says intense storms moving through Montgomery County will move into the District over the next 30 minutes and have produced dangerous winds.

A flash flood warning is also in effect for much of the area through 8:45 p.m., so use caution out on the roads. Some travelers this morning were stranded in flood waters. @capitalweather tweeted this advice: Do not attempt to drive through flooded roadways (if they flood). Turn around, don't drown.

5:45 p.m. Update: Expect traffic issues in Chinatown as emergency crews respond to a fire near the intersection of 7th and H Streets NW, according to D.C. Fire/EMS spokesman Pete Piringer.

5:35 p.m. Update: DDOT says one lane on Connecticut Avenue is now open in each direction.

Montgomery County is reporting that 200 traffic signals are without power.

Original post: Here is a roundup of some reported road closures. Please add additional ones in the comments below.

The District
-- Canal Road from the 4400 block to Reservoir Road.
-- Connecticut Avenue NW from Calvert to T Street.

Husband reports having been stuck on K St, between 16th and 17th, for at least half an hour. This is a typical route home for him (alternative is Rock Creek Pkwy -- a definite no-no today) and although "slow" is normal, "stuck" is not. Can't find details -- any word on what might be holding up traffic?